MasterCraft 058-8987-8 User manual

INSTRUCTION MANUAL
AIR-POWERED
MINI PALM-GRIP NAILER
058-8987-8

TABLE OF CONTENTS
2
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
QUICK START GUIDE
TECHNICAL SPECIFICATIONS 3
SAFETY GUIDELINES 4–9
KEY PARTS DIAGRAM 10
IMPORTANT INFORMATION 11–13
TYPES OF FASTENERS 14
OPERATING INSTRUCTIONS 15–17
MAINTENANCE 18–19
TROUBLESHOOTING 20–21
EXPLODED VIEW 22
PARTS LIST 23
WARRANTY 24–25

SAFETY GUIDELINES
4
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Safety guidelines
This manual contains information that relates to PROTECTING PERSONAL SAFETY and PREVENTING
EQUIPMENT PROBLEMS. It is very important to read this manual carefully and understand it
thoroughly before using the product. The symbols listed below are used to indicate this information.
Note- The word “Note” is used to inform the
reader of something he/she needs to know about
the tool.
PERSONAL SAFETY
These precautions are intended for the personal safety of the user and others working with the user.
Please take time to read and understand them.
DANGER!
Potential hazard that will result in serious
injury or loss of life.
WARNING!
Potential hazard that could result in
serious injury or loss of life.
CAUTION!
Potential hazard that may result in
moderate injury or damage to equipment.

SAFETY GUIDELINES
5
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
SAFETY GUIDELINES
DANGER!
Potential hazard that will result in serious injury or loss of life.
•Keep children away from the work area. Do not allow children to handle
power tools.
•Do not use this tool in the presence of flammable liquids or gases. Sparks
that are created during use may ignite gases.
•Do not point the tool towards yourself or other people with the nail loaded.
•Do not keep the tool pressed while loading the nail.
•Do not disconnect or reconnect the air hose with the tool pressed or with a
nail in the nail guide. The Air-powered Mini Palm-grip Nailer may fire when
it is reconnected to the air supply.
•Do not use oxygen or any other combustible or bottled
gas to power air-powered tools. Failure to observe this
warning can cause explosion and serious personal injury
or death. Use only compressed air to power air-powered
tools. Failure to comply will result in serious injury or loss
of life.
•Risk of electric shock: Do not expose a compressor to rain. Store it indoors.
Disconnect the compressor from the power source before servicing.
Compressor must be grounded. Do not use grounding adaptors.
Oxygen
Hydrogen
Explosive
Combustible
MC-OM-02

SAFETY GUIDELINES
6
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
•Risk of personal injury: Do not direct compressed air from the air hose
towards the user or other persons.
•Risk for breathing: Never directly inhale the air produced by the compressor.
•Risk of bursting: Do not adjust the pressure switch or safety valve for any
reason. They have been preset at the factory for this compressor’s maximum
pressure. Tampering with the pressure switch or the safety valve may cause
personal injury or property damage.
•Risk of burns: The pump and the manifold generate high temperatures. In
order to avoid burns or other injuries, do not touch the pump, the manifold,
or the transfer tube while the compressor is running. Allow the parts to cool
down before handling or servicing. Keep children away from the compressor
at all times.
•Risk of bursting: Make sure the regulator is adjusted so
that the compressor outlet pressure is set lower than the
maximum operating pressure of the tool. Before starting
the compressor, pull the ring on the safety valve to make
sure the valve moves freely. Drain water from tank after
each use. Do not weld or repair tank. Relieve all pressure
in the hose before removing or attaching accessories.
MC-OM-22

SAFETY GUIDELINES
7
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
WARNING!
Potential hazard that could result in serious injury or loss of life.
•Do not allow inexperienced or untrained individuals to operate an
Air-powered Mini Palm-grip Nailer or any other air-powered tool.
•Keep hands and other parts of the body away from the nail guide during
use. Keep hands, feet, and all other parts of the body at least 8" (20 cm)
away from the firing head. Objects in the workpiece can cause serious injury
if they cause the nails to be deflected or to be driven away from the point of
entry.
•Do not connect the tool to a compressed air source with a pressure output
that is higher than 120 psi.
•Do not drive fasteners on top of a nailed fastener. The fastener may
ricochet, causing serious personal injury.
•Do not drive fastener on scaffoldings, ladders, or such similar construction,
not working on airtight case, and vehicles.
•Use only genuine parts and accessories recommended by the manufacturer.
•Use only nails of the proper size and gauge, as specified in this manual
(see
section “Technical specifications”)
. Failure to comply could lead to serious
injury or loss of life.

SAFETY GUIDELINES
8
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Carry the tool by the handle only, keeping fingers away from the trigger. Do
not carry the tool by the hose, magazine, or any other parts.
•Keep proper footing at all times in order to ensure correct balance.
•Do not drive nails close to the edge of the workpiece. The workpiece may
split, which could allow the nail to fly free or ricochet and cause serious
personal injury.
• Do not use a tool that is leaking air, that has missing or damaged parts, or
that requires repairs. Verify that all screws are securely tightened.
• For optimal safety and tool performance, inspect the tool daily in order to
ensure free movement of the trigger, safety mechanisms, and springs.
•Keep the work area clean. A cluttered or dirty workbench may lead to an
accident. Floors should be kept clear.
•This tool is not a toy. Use it with caution.
•Handling and storage of oil: Use with adequate ventilation. Avoid contact of
oil with eyes, skin, and clothing. Avoid breathing spray or mist. Store in a
tightly closed container in a cool, dry, well-ventilated area free from
incompatible substances.
•Tripping hazard: The air hose may become a tripping hazard when it is
placed in the work area. Use care when walking in the work area.

SAFETY GUIDELINES
9
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Note: Recycle unwanted materials rather than disposing of them as waste. Sort the tools, hoses, and
packaging in specific categories and take to the local recycling centre or dispose of in an
environmentally safe way.
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Disconnect the tool from the air supply and turn off the
compressor before performing any maintenance or changing
accessories, when the tool is not in use, when it is being
handed to another person, and when it is left unattended.
Failure to comply may result in moderate injury.
•Use safety goggles and ear protection:
Wear safety glasses with side shields when operating the
tool and verify that others in the work area are also wearing
safety glasses. Safety glasses must conform to American
National Standards Institute (ANSI Z87.1) requirements and
must provide protection from flying particles from the front
and the sides.
Air-powered tools are loud and the sound can cause hearing
damage. Always wear ear protection to help prevent hearing
damage and loss. Failure to comply may result in moderate
injury.
MC-588987-09
MC-OM-01

KEY PARTS DIAGRAM
10
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
No. Description No. Description
1 Air inlet plug 3 Turn buckle
2 Magnet
MC-588987-01
1
2
3

IMPORTANT INFORMATION
11
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Compatible compressors
GUIDELINES FOR PROPER USE AND OPERATION
Be sure to use a proper air compressor with Mastercraft® air-powered tools. The compressor should
be able to supply a minimal air delivery of 4.0 SCFM @ 90 psi to ensure the compressor can run
continuously with the Mastercraft Air-powered Mini Palm-grip Nailer.
General use
This Mastercraft®Air-powered Mini Palm-grip Nailer is an air-powered tool with a new and
advanced design, compact structure, and superior technology which enables the tool to drive nails
into the workpiece without a trigger. The tool is dexterous, safe, and reliable to operate. The tool is
ideal for nailing at tight corners, toe-nailing, joist hanger installations, etc.
Air Compressor
Size & Power 1 1/2 – 2 HP 2 1/2 HP 3 HP and more
4 –5 Gallons Light-duty and
intermittent use
Light-duty and
intermittent use
Light-duty and
intermittent use
8 –11 Gallons Light-duty and
intermittent use
Heavy-duty and
continuous use
Heavy-duty and
continuous use
15 Gallons
and more
Medium-duty and
intermittent use
Heavy-duty and
continuous use
Heavy-duty and
continuous use
Wood density Nail size Compressor air pressure
!0.6g/cm3
21/2" (63 mm) brad nails 90 psi
t21/2" (63 mm) brad nails 100 psi
d0.6g/cm3
21/2" (63 mm) brad nails 80 psi
t21/2" (63 mm) brad nails 90 psi

IMPORTANT INFORMATION
12
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Air system
• Always use clean, dry, regulated, compressed air at 70 to 100 psi (5 to 7 bar).
• Do not exceed the maximum or minimum pressures. Operating the tool at the wrong pressure
(too low or too high) will cause excessive noise or rapid wear.
WARNING!
Potential hazardthat could result inserious injury or loss of life.
•Keep hands and other parts of the body away from the tool’s discharge and
working areas when connecting the air supply. Failure to comply could lead to
serious injury or loss of life.
No. Description No. Description
1Mastercraft
®
Air-powered Mini Palm-grip
Nailer 6 Regulator (0 to 8.5 bar)
2 Quick connector 7 Filter
3 Quick coupler 8 Cut-off valve
4 Air hose 9 Air compressor
5 Lubricator
257
1
33
6
8
9
4
MC-588987-02

IMPORTANT INFORMATION
13
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Read this Instruction Manual carefully before using the Air-powered Mini Palm-grip Nailer.
• Read and follow all the safety instructions at the beginning of this manual. Inspect the
Air-powered Mini Palm-grip Nailer prior to each use in order to
– ensure that the proper power source is being used.
– verify that the tool is in proper working order.
• It is recommended that a filter-regulator-lubricator be used and be located as close to the tool
as possible.
• If a filter-regulator-lubricator is not installed, place up to 6 drops of compressor oil into the air
inlet plug before each use.
• If a filter-regulator-lubricator is installed, keep the air filter clean. A dirty filter will reduce the
air pressure to the tool, which will cause a reduction in power, efficiency, and general
performance.
• For optimal performance, install a quick connector to the tool and a quick coupler on the
hose, if applicable.
• Verify that all of the connections in the air supply system are sealed in order to prevent air
leakage.
WARNING!
Potential hazard that could result in serious injury or loss of life.
• Do not use the tool if it is not in proper working order.
• Do not use oxygen or any other combustible or bottled gas to power this tool.
• Do not use this tool in the presence of any flammable liquids or gases.
• Keep hands and other parts of the body away from the firing head during use.
• Do not point the tool towards the operator or other people.
• Do not attempt to clear a jammed nail when the air hose is connected.
•Do not drive a nail on top of an existing nail. Failure to comply could lead to
serious injury or loss of life.

TYPES OF FASTENERS
14
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
This Mastercraft® Mini Palm-grip nailer drives 90 mm (3 1/2").
ACCEPTABLE FASTENERS
This nailer can be used with a variety of shank types (e.g., ring, smooth, spiral) and a variety of
coatings or nail compositions (e.g., Electro, mechanical, hot-dipped galvanized or stainless steel,
etc.).
Nails (14 gauge)
WARNING!
Potential hazard that could result in serious injury or loss of life.
• The use of any other types of nails will cause the nailer to jam and could lead
to serious injury or loss of life.
MC-588
9
up to
3 1/2”

OPERATING INSTRUCTIONS
15
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Loading nails
1. Plug in compressor, turn it on, set the
pressure regulator to 40 psi, attach one
end of the air hose to the compressor
and the other end of the air hose (1) to
the tool (2)
(fig A) . page 11
(wood density chart)
2. Grip the base of the tool in one hand.
Hold a nail by the shaft (1), and place
the flat head into the nail guide (2). The
nail will be held in place by the magnet
(fig B) .
DANGER!
Potential hazard that will result in serious injury or loss of life.
• Do not point the tool towards the operator or other people while changing
the nails or after loading the nail.
• Do not hold the tool with the nail guide pressed while changing nails.
Failure to comply will lead to serious injury or loss of life.
MC-588987-03
fig A
1
2
MC-588987-04
fig B
1
2

OPERATING INSTRUCTIONS
16
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
3. Place the pointed end of the nail (1) on
the workpiece (2). Keep your free hand
away from the tool and the nail
(fig C) .
4. Press the tool straight down. This will
trigger the tool and cause it to hammer
the nail. Continue pressing down until
the nail is driven all the way in
(fig D) .
MC-588987-05
MC-588987-05
fig C
1
2
MC-588987-05
MC-588987-06
fig D
1
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Add some drops of pneumatic tool oil into the air inlet for lubrication before
use. Failure to comply may result in moderate injury or damage to equipment.
WARNING!
Potential hazard that could result in serious injury or loss of life.
• Do not operate the tool if the nails are not loaded, as doing so may damage
the tool.
• Load the correct type of nails only. Failure to comply could lead to serious
injury or loss of life.

MAINTENANCE
18
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Maintenance
DANGER!
Potential hazard that will result in serious injury or loss of life.
• Disconnect the tool from the air compressor before performing maintenance/
service, adjusting, clearing jams, reloading, and when it is not in use.
• Repairs must be performed by a qualified service technician only. Failure to
comply will lead to serious injury or loss of life.
MAINTENANCE
REQUIRED DESCRIPTION
TOOLS OR
MATERIALS
REQUIRED
MAXIMUM SERVICE INTERVAL
Each Use or
every 2 Hrs. Monthly As Needed
General inspection –
free movement
Trigger, spring,
safety mechanism None X
In-depth inspection Worn or broken
parts X X
Replace worn or
broken parts X
Lubrication See below Pneumatic tool
oil X
• Lubrication: If the Air-powered Mini Palm-grip
Nailer and the compressor are not equipped with
an in-line lubrication system, place 2 to 6 drops of
pneumatic tool oil into the air inlet before each
work day or after every 2 hours of continuous use,
depending on the characteristics of the workpiece
and type of nails used.
MC-588987-10

MAINTENANCE
19
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
• Air-operated tools must be inspected periodically and worn or broken parts must be replaced
in order to keep tools operating safely and efficiently.
• Inspect and replace worn or damaged O-rings, seals, etc. Tighten all screws and caps
frequently in order to help prevent personal injury.
• Inspect the spring and safety mechanism for free movement on a regular basis in order to
ensure that the safely system is fully functional. Verify that no parts are loose or missing and
no parts are sticking or jammed.
• Keep the nail guide clean and free of any dirt or abrasive particles.
Note: When temperatures are below freezing, maintain the tools in a warm condition using any safe,
convenient method.

TROUBLESHOOTING
20
AIR-POWERED MINI PALM-GRIP NAILER 058-8987-8
Troubleshooting
The following chart lists common operating system issues and solutions. Please read it carefully and
follow all instructions closely.
• Disconnect the tool from the air supply before making any adjustments.
• When replacing O-rings or cylinder, lubricate the tool with pneumatic tool oil before assembly.
• Repairs must be performed by a qualified service technician only.
Note: For further repair information, please call 1-800-689-9928.
DANGER!
Potential hazard that will result in serious injury or loss of life.
• If any of the following symptoms appear while the tool is in use, turn it off and
disconnect it from the air supply immediately. Failure to comply will lead to
serious injury or loss of life.
PROBLEM POSSIBLE CAUSES SOLUTIONS
Air leakage. 1. O-rings are worn or damaged.
2. Screws are loose.
1. Inspect and replace the O-rings.
2. Tighten the screws.
Attack strength
is not enough.
1. Air pressure is not in specified
range.
2. The O-ring beside slip set is
worn.
1. Adjust the air pressure to specified range.
2. Replace the O-ring.
The tool does not
drive out the nails
when connected to
air supply.
1. Insufficient air supply.
2. O-rings are worn or damaged.
1. Adjust the air pressure.
2. Inspect and replace the O-rings.